Drop-dispersing agent



Patented Apr. 14, 1931 PATENT OFFICE WILLIAM F. ROESCH, OF PHILADELPHIA, PENNSYLVANIA DROP-DISPERSING AGENT No Drawing. Application filed February The present invention relates to an im proved means for preventing formation of rain or other drops 011 various surfaces and especially on surfaces of transparent materials, more especially glass, hence preventing any hindrance to the transparency of the panes of various vehicles. The formation of drops on surfaces is due to the mutual cohesion of the particles of the water being greater than their adhesion to the panes.

It is hence the fundamental purpose to in crease the adhesion of water to the pane to such an extent that when it strikes against the pane its particles are torn apart and caused to spread, consequently to flow down in a uniform layer so as to avoid any aifect to the transparency of the wet pane.

Another purpose is to use a suitable sprayer not herein disclosed but of conventional character, for causing the application of this dispersing agent or formula to the pane, especially those of automobiles, street and railway cars and the like, or in fact any pane Where it is necessary to have the gaze transmitted through the pane, to insure observing all objects on the other side of the pane, and hence preventing accidents.

This drop dispersing agent when applied to a pane is of such a character as to outlast the duration of the rain, so that when the rain drops strike the glass, they will roll off in a thin film, and thereby enable to maintain the glass practically as transparent as when it is not raining.

The formula of the drop dispersing agent comprises boraX powder, elm bark acacia and alcohol, Which are compounded in proportions as herein after disclosed.

Borax powder acts to soften the water and constitutes a cleaner, the elm bark prevents the water from beading, insuring the rain to roll in a thin film. The acacia clings to the glass and gives the elm bark a substantial body, and also insures the rain drops to roll off in a thin film. Without the elm bark, the solution or agent would easily wash off within a short space of time. The alcohol acts as a preservative, insuring to keep the agent in a first class condition, as well as keeping the Water from beading.

1, 1928. Serial No. 251,227.

In compounding this agent for practical use, it is the aim to dissolve one-eighth of an ounce of powdered borax into sixty-four fluid ounces of water. To the boraX and water add one ounce of elm bark, and let it dissolve for twenty-four hours. Into this mixture pour one pound of acacia. Acacia as in the trade comes in lumps of about one-fourth to onehalf inch in diameter and it also comes in a powder, but it is preferable to use the lumps. The using of powdered acacia before it is dissolved would cause it to lump, but in using lump acacia it dissolves from the outer surface inward, and it should take substantially thirty to forty hours to dissolve one pound of acacia and after this mixture is thoroughly agitated eight drams of alcohol is added.

It is to be understood that the particulars herein given are in no way limitative, and that while still keeping within the scope of the invention, any desired modification in proportions may be made in the drop dispersing agent according to circumstances.

The invention having been set forth, what is claimed is:

1. A drop dispersing agent comprising borax and water, elm bark, acacia and alcohol, the several foregoing ingredients being compounded in amounts substantially as specified.

2. A drop dispersing agent, comprising borax, one-eighth of an ounce; Water, sixtyfour fluid ounces; elm bark, one ounce; acacia, one pound; and alcohol, eight drams.

In testimony whereof he affixes his signa ture.

WILLIAM F. ROESOH. 

